Tweedeldum and tweedledee are carrying a uniform wooden board that is l = 3.00 m long and has a weight of w = 160 n . if tweedledum applies an upward force of magnitude f1 = 60.0 n at the left end of the board, at what point and with what magnitude f2 of force does tweedledee have to lift for the board to be carried?

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.